CVE-2021-31616

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    CVE-2021-31616

    Published: 6 May 2021Last Modified: 12 Feb 2026

    Summary:

    Details: Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.1.0 allow a stack buffer overflow via crafted messages. The overflow in ethereum_extractThorchainSwapData() in ethereum.c can circumvent stack protections and lead to code execution. The vulnerable interface is reachable remotely over WebUSB.

    References: https://blog.inhq.net/posts/keepkey-CVE-2021-31616/, https://github.com/keepkey/keepkey-firmware/commit/e49d45594002d4d3fbc1f03488e6dfc0a0a65836, https://github.com/keepkey/keepkey-firmware/releases/tag/v7.1.0, https://shapeshift.com/library/keepkey-important-update-issued-april-4-required, https://blog.inhq.net/posts/keepkey-CVE-2021-31616/, https://github.com/keepkey/keepkey-firmware/commit/e49d45594002d4d3fbc1f03488e6dfc0a0a65836, https://blog.inhq.net/posts/keepkey-CVE-2021-31616/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    v7.0.3

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-31616 | CVE-DB